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Finding the Fourth Proportional to 7,776.43, 11,661.13 and 2,228.50

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Solution

The fourth proportional to 7,776.43, 11,661.13 and 2,228.50 is: 3,341.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,776.43 : 11,661.13 = 2,228.50 : x
  2. Step 2: Convert to fraction form
    7,776.43/11,661.13 = 2,228.50/x
  3. Step 3: Cross multiply
    7,776.43x = 11,661.13 × 2,228.50
  4. Step 4: Simplify right side
    7,776.43x = 25,986,817.06
  5. Step 5: Solve for x
    x = 25,986,817.06/7,776.43
  6. Step 6: Final answer
    x = 3,341.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.